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... cage of reinforcement 钢筋笼 cable tool drilling 冲钻 cable tool drill(see churn drill) 冲钻 ...
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介绍了冲钻套筒的冷挤压工艺、 模具设计。
The cold extrusion process and mould design have been introduced of the pressing drill sleeve.
针对这一问题，大庆物探公司研制出XC - 82型液力旋冲钻具及配套钻头。
Regarding to the problem, XC-82 hydraulic rotary impact drilling tools and matching bits are developed by Daqing Geophysical Exploration Corporation.
建立了新型开铁口机电动钻冲机构的力学模型，计算了它的固有频率和主振型。
Mechanical model of the drill carriage with rotation and vibrating hammer for the new type taphole drill is established.
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